Chain mat for resilient tires.



M. A. CARTER. CHAIN MAT FOB. RESILIENT TIRES. APPLICATION FILED NOV. 7, 1912 Patented Jun 17, 1913.

maarz cefl Carlkr:

' ATTORNEY their very eonst certain dele il's I of con 'tion of with such rmat-s,

UNITED STAlES MAURICE A. CARTER, OF GRAI'IVILLIL NEW YORlQ 3351C CHAINQCOIIIPAEEY,

B TO THE 'ALKER II-RE Q3? 'lOZEEDQ, CHIS.

GHATN MAT FOR RESILIEN'I TIRES.

, Specifics tion of Application filed November 73-17912.

Leirer I- eni Pz'itcnted June 17, 19] Y 4 U- Sciial No. 730,60

51 '0 all whom it may concern. l

Be itlmovvnv that 1, MAURICE A. CARTER a citizen of the United Slinles, residing of Granville, county of nshington, Stale of I New York, have invented certain new and. 5 useful Improvements in Chain Mats for! Resilient Tires; and I do declare the fob v lowing to be full, clear, and exact d scription of the :invenlion, suchas Wlll 9E able others skilled in the art to which appertoins to make and use the same invention has reference lo-cermln 1mprovemenbs'in'chain mats such as are nilnpied to be applied to the resilient tires of wheels, and he's for its object to improve on ithe construction shown and described in U. "S. Letters Patent No.

911,427, issued! February '2, 1909, =to Burke Judson More house. i

In the construction set forfh in said Letters Patent. one of the objects aimed at was :to prevent the mat from crawling; circumferent-ia'lly of the the during the travel ofa Vehicle whose tires were equipped v but the cross chains set i forth in said i pz tent, Were eoi'nposecl of; twisted Wire links which were capable of an axial rolling morementond which from 1 ruction could not lie fiat against :the tire; also, in said patented con struction the rings located in lhe center of the tread of t'he' tire were connected in l'hc twisted cross chains in such manner hat I said rings were capable of an axial turning. "While thechain mat shown and dc- 5 scribed in saidfLetters Potent has proved exceedingly eflicient, nevertheless, when iii is in'lproperly applied. to a lire, a certain amount of creeping action is possible o'wl ing to the nature of the cross chains and to their connection with the tread rings, and it is the especial object of th'e'present invention to correct these defects and to provide a, chain mabwhich cannot; possibly creep circumferentially of the tire, end with this end in view --inyin vention consists in sfirnction 'and combineter 'fullyset for tl l and cl outi in the claims 'ri'pjf-ion 1 g rawing lligure 1 is equ pP to Wheel Io chains 2 suitable 5 so as to provide two pairs of recesses tion on ia'tir improved chain mot, and

s f a detail rm funnier numerals of reference denote like parts m The several figures of the drawing. I represent: lhe tire and 2 the rim of the which the tire applied. My improved mat comprises two side 3 formed of any approved style of linlc'and of such length as to extend enl'llaround the sides "ofthev tire, the exllE-llllhlfib" of said chains being provided with any suitable nnd'ordinairy locking devices (not shown), so that said chains may be properly tightened and secured in posilion in the nsuel manner.

Mu-e ring made of suitable lie snugly against thetread of the tire at intervals, and the metal which forms these rings is reduced in thickness 7 ring.

metal which at diametrically opposite points ofithe That is to say, the recesses 5 are diametrically opposite each other while the recesses I are likewise dian'ietrically opposite each other.

T arefletlinksmode of sheet-metal whose bow portions embrace the rings Within the recesses 5, 6, so as to fit snugly therein and yet be capable of free rocking movement-S around the rings, and 7conncct'ed to .these links in the usual manner are other fint sheet metal links 8, 9, Which likewise lie flat againstthe periphery of the tire, and lo the links 9 two connecbcd'twisted terminal links 10.

1] are double anchor hooks which are carried by the extremities of the links 10, ihe two hop-ks of each of these elements 11 being secured to adjoining links f .the side chains 3, so that it will be c early understood that the cross chains composed of the links 7, 8, and 9 are secured at their outer extremities to the rings 4 in such manner as to be incapable of any axial" or rocking movements while at their inner ends said 'hains are secured to the side chains ll3 two locations. thereby also pre enting any rocking or axial movement of these cross chains. I

The i wistedlinks 10, i

n assembled posiare located at thesidelpores IQQ ilmks e'e come in contact with the ground so as 0 become wrenched and lmpart a tendency tev'ard an twisted links since they afford a re. y con:

venient means for attaching the anchor.

hooks l1 nevertheless I do not wish to be limited in this respect. since other devices may be employed in this connection all within the range of ordinary mechanical skill and requiring no invention. The rings all occupy substantially one vertical plane on the tire,.and as these rings project a quarter of an inch or more beyond the periphery of the tire they will themselves tend to pre vent skidding of a vehicle equipped with my improvement, provided that they are held firmly to the tire without any creeping action of the mat as a whole.

The cross chains being made tlat and of sheet metal and confined at their extremities in the manner hereinbefore described, cannot roll or have any axial movement, and as these cross chains extend from the rings at diametrically opposite locations the tendency to creep circumferential]y of the tire is resisted to a marked degree, and right in this connection I desire to call attention to thc fact that there can be no whipping of the cross chains and rings agalnst the ground in advance of the contact of the tire therewith such as is common in. tire armor or chains now in general use and which mainly contributes toward this creepin of the chain. Since there can be no'rolhng or axial movement of the cross chains and rings, the Wear on the same by constant usage will be fairly uniform so that my improved chain mat is reversible, andthis is an advantage which is very material and which cannot attach to cross chains of twisted Wire links which do not lie snugly against the tire and which are continually crawling around the periphery thereof. Also, a chain mat made in accordance with my present improvement,

will not only give a good and safe traction on all kinds of roads and at any desired speed, but the wear on the tires caused by the mat itself is reduced to a minimum.

By referring to Figs. 1 and 3 of the drawmgs it will be observed that the rings 4 lie fiat and centrally on the tread Of the tire and that the seats 5 thereof are so disposed that they prcvent the cross chains rotating axially and hold the anchored ends of said chains so that when the cross chains are attached to the side chains 3, said cross chains are retained in radiating relation. By this arrangement it will be'clear that rolling of the chains is P18"8Ilt6d and also that as the chains exert pulling strains on the rings t in opposite directions, movements of said rings are prevented.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is i 1. A chain mat for resilient tires comprising side chains, tread pieces presenting closed open-centered outlines to the tire, and securing chains for each tread piece secured to either side chain at remote points and to each tread piece at fixed locations.

2. A chain mat for resilient tires comprising side chains, ring shaped tread pieces having opposite portions thereof reduced to provide two pairs of anchor seats, the members of each pair of seats being arranged in spaced relation, and securing chains having one of their ends fixed to said seats to prevent movement on the tread pieces and their other ends connected to the side chains at remote locations.

3. A chain mat for resilient tires comprising side chains, tread pieces presenting securing chains formed of flat links for each tread piece secured to either side chain at remote points and to each tread piece at fixed locations.

In testimony whereof I aflix my signature in presence of two witnesses.

MAURICE A. CARTER. Witnesses:

MILFORD D. VVHEDON, Monroe!) WILLIAMS.

closed open-centered outlines to the tire, and 

